Portable test instrument



FIG. 1 is an oblique view of a first variant of the portable test instrument, taken from the front and below, showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a left side elevation view thereof;

FIG. 8 is another oblique view thereof, taken from the rear and above, where a stand and a connector door of the instrument are in a deployed state;

FIG. 9 is another oblique view thereof, taken from the front and above;

FIG. 10 is an oblique view of a second variant of the portable test instrument, taken from the front and below;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a top plan view thereof;

FIG. 13 is a rear elevation view thereof;

FIG. 14 is a bottom plan thereof;

FIG. 15 is a right side elevation view thereof;

FIG. 16 is a left side elevation view thereof;

FIG. 17 is another oblique view thereof, taken from the rear and above, where a stand and a connector door of the instrument are in a deployed state; and,

FIG. 18 is another oblique view thereof, taken from the front and above;

The dashed line showing of structural lines is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a portable test instrument, as shown and described. 